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Define Serializable schedule
Serializable schedule: An interleaved schedule of much more than one transaction is known as a serializable schedule, if it is equal to some serial schedule of those transactions.
What is D command work in the respect of QBE? D: It is the command inside QBE to delete tuple(s) from the relation.
Dependency Preservation It is obvious that the decomposition must be lossless so that we do not lose any information from the relation that is decomposed. Dependency preservati
In Database software have only pure security or some dis secured by administrator?
Consider the following six relation schemes and their corresponding sets of functional dependencies. In each case identify a. All the candidate keys b. The highest normal for
What is an entity relationship model? The entity relationship model is a collection of basic objects known as entities and relationship between those objects. An
The issues relating to the Design of the Physical Database Files Physical File is a file as stored on the disk. The major issues relating to physical files are: • Cons
WHY SHOULD NULL IN A RELATION BE AVOID AS possible?
Database systems have many opposite efforts ?
what are the main characteristics of database
what do you mean by consistency in rdbms?
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